public class Example04 {
    public static void main (String[] args){
        int x = 12;                             //定义变量x
        {
            int y = 96;                         //定义变量y
            System.out.println("x is "+ x);     //访问变量x
            System.out.println("y is "+ y);     //访问变量y
        }
//        y = x;                                 //访问变量x,为变量y赋值
        System.out.println("x is " + x);
    }
}
